package com.example.bigevent.controller;

import com.example.bigevent.pojo.Result;
import com.example.bigevent.pojo.User;
import com.example.bigevent.service.UserService;
import com.example.bigevent.utils.JwtUtil;
import com.example.bigevent.utils.Md5Util;
import com.example.bigevent.utils.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import org.apache.tomcat.util.http.parser.Authorization;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
@Validated
public class UserController {
    @Autowired
    private UserService userService;
    @Autowired
    private StringRedisTemplate stringRedisTemplate;
    @PostMapping("/register")
    public Result register(@Pattern( regexp = "^\\S{5,16}$") String username,@Pattern( regexp = "^\\S{5,16}$") String password){
        User u= userService.getByName(username);
        if(u==null){
            userService.register(username,password);
            return Result.success();
        }else{
            return Result.error("用户名已被占用");
        }
    }
    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\\S{5,16}$") String username,@Pattern( regexp = "^\\S{5,16}$") String password)
    {
        User loginUser=userService.getByName(username);
        if( loginUser==null)
        {
            return Result.error("账户名错误");
        }else{
            if(Md5Util.getMD5String(password).equals(loginUser.getPassword()))
            {
                Map<String,Object> claims =new HashMap<>();
                claims.put("id",loginUser.getId());
                claims.put("username",loginUser.getUsername());
                String token= JwtUtil.genToken(claims);
                ValueOperations<String,String> operations=stringRedisTemplate.opsForValue();
                operations.set(token,token,1, TimeUnit.HOURS);
                return Result.success(token);
            }else
            {
                return Result.error("密码错误");
            }
        }
    }
    @GetMapping("/userInfo")
    public Result<User> userInfo()
    {
        Map<String,Object> map= ThreadLocalUtil.get();
        String username=(String)map.get("username");
        User user=userService.getByName(username);
        return Result.success(user);
    }
    @PutMapping("/update")
    public Result update(@RequestBody @Validated User user)
    {
        userService.update(user);
        return Result.success();
    }
    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @URL String avatarUrl){
        userService.updateAvatar(avatarUrl);
        return Result.success();
    }
    @PatchMapping("updatePwd")
    public Result updatePwd(@RequestBody Map<String,String> params,@RequestHeader("Authorization") String token){
        String oldPwd=params.get("old_pwd");
        String newPwd=params.get("new_pwd");
        String rePwd=params.get("re_pwd");
        if (!StringUtils.hasLength(oldPwd)||!StringUtils.hasLength(newPwd)||!StringUtils.hasLength(rePwd)){
            return Result.error("缺少必要的参数");
        }else {
            Map<String, Object> map = ThreadLocalUtil.get();
            String username = (String) map.get("username");
            User loginUser = userService.getByName(username);
            if (!loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))) {
                return Result.error("原密码填写不正确");
            }
            if (!newPwd.equals(rePwd)) {
                return Result.error("两次填写的密码不一样");
            }
            userService.updatePwd(newPwd);
            ValueOperations<String,String> operations=stringRedisTemplate.opsForValue();
            operations.getOperations().delete(token);
            return Result.success();
        }
    }
}
